33 lines
993 B
C
33 lines
993 B
C
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#include "tb_cxxrtl_io.h"
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#include "hazard3_csr.h"
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int main() {
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volatile uint32_t target_word = -1u;
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tb_puts("Store word, 1 byte offset\n");
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asm volatile ("sw zero, 1(%0)" : : "r" (&target_word));
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tb_printf("Target value: %08x\n", target_word);
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tb_puts("Store word, 2 byte offset\n");
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asm volatile ("sw zero, 2(%0)" : : "r" (&target_word));
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tb_printf("Target value: %08x\n", target_word);
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tb_puts("Store word, 3 byte offset\n");
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asm volatile ("sw zero, 3(%0)" : : "r" (&target_word));
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tb_printf("Target value: %08x\n", target_word);
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tb_puts("Aligned store word, sanity check\n");
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asm volatile ("sw zero, 0(%0)" : : "r" (&target_word));
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tb_printf("Target value: %08x\n", target_word);
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return 0;
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}
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void __attribute__((interrupt)) handle_exception() {
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tb_printf("-> exception, mcause = %u\n", read_csr(mcause));
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write_csr(mcause, 0);
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if (*(uint16_t*)read_csr(mepc) & 0x3 == 0x3) {
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write_csr(mepc, read_csr(mepc) + 4);
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}
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else {
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write_csr(mepc, read_csr(mepc) + 2);
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}
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}
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